User Equipment or Source Master Node, Network Nodes and Methods in a Wireless Communications Network

Abstract

A method for indicating a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) in a wireless communications network is provided. The method is performed by a User Equipment (UE), or by a source Master Node (MN). The UE is configured with a current SCG. A CHO configuration for the UE is obtained ( 1201 ) from a source MN. The CHO configuration comprises a configuration for a target candidate node. The target candidate node comprises any one or more out of: a target candidate MN and a target candidate Secondary Node (SN). When CHO execution conditions related to the CHO configuration are fulfilled, an indication is sent ( 1204 ) to the target candidate node. The indication indicates an SCG state being set to any one out of: SCG activated or SCG deactivated.

1 - 40 . (canceled) 
     
     
         41 . A method for indicating a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) in a wireless communications network, wherein the method is performed by a User Equipment (UE) or by a source Master Node (MN) and the UE is configured with a current SCG, and wherein the method comprises:
 obtaining from a source MN, a CHO configuration for the UE, which CHO configuration comprises a configuration for a target candidate node, which target candidate node comprises any one or more out of: a target candidate MN and a target candidate Secondary Node (SN); and   responsive to CHO execution conditions related to the CHO configuration being fulfilled, sending an indication to the target candidate node, which indication indicates an SCG state being set to any one out of: SCG activated or SCG deactivated.   
     
     
         42 . The method according to  claim 41 , wherein the SCG state is set according to any one out of the current SCG state, and/or a target SCG state. 
     
     
         43 . The method according to  claim 41 , further comprising:
 obtaining, the current SCG state, which current SCG state is set to any one out of: SCG activated or SCG deactivated,   and wherein the indication to the target candidate node indicates the current SCG state, which indication will set a target SCG state to SCG activation or SCG deactivation, initiated by the selected target candidate node.   
     
     
         44 . The method according to  claim 41 , wherein:
 obtaining, a target SCG state to any one out of:
 always deactivated, 
 always activated, 
 a value pre-configured, as activated, or deactivated, 
 a the latest SCG state the UE has when CHO is executed, and 
   wherein the indication to the target candidate node indicates the target SCG state.   
     
     
         45 . A method performed by a first network node acting as a source Master Node (MN) for handling a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) for a User Equipment (UE) in a wireless communications network, wherein the UE is configured with a current SCG and wherein the method comprises:
 sending to the UE, a Conditional Handover (CHO) configuration for the UE, which CHO configuration comprises a configuration for a target candidate node, which target candidate node comprises any one or more out of: a target candidate Master Node, MN, and a target candidate Secondary Node, SN;   wherein, responsive to CHO execution conditions relating to the CHO configuration being fulfilled, the UE sends an indication to the target candidate node, which indication indicates an SCG state being set to any one out of: SCG activated or SCG deactivated.   
     
     
         46 . The method according to  claim 45 , wherein SCG state comprises any one out of the current SCG state, and/or a target SCG state. 
     
     
         47 . The method according to  claim 45 , further comprising:
 sending to the UE, a current SCG state, which current SCG state is set to any one out of: SCG activated or SCG deactivated,   and wherein the indication to the target candidate node indicates the current SCG state, which indication will set a target SCG state to SCG activation or SCG deactivation, initiated by the selected target candidate node.   
     
     
         48 . The method according to  claim 45 , further comprising:
 configuring the UE with a target SCG state set to any one out of:
 always deactivated, 
 always activated, 
 a value pre-configured as activated or deactivated, 
 a latest SCG state the UE has when CHO is executed, and 
   and wherein the indication indicates the target SCG state.   
     
     
         49 . A method performed by a second network node acting as a target Master Node (MN) for handling a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) for a User Equipment (UE) in a wireless communications network, wherein the UE is configured with a current SCG and the method comprises:
 based on CHO execution conditions relating to a CHO configuration being fulfilled, receiving an indication from the UE indicating whether an SCG state is set to activated or deactivated.   
     
     
         50 . The method according to  claim 49 , wherein SCG state comprises any one out of the current SCG state, and/or a target SCG state. 
     
     
         51 . The method according to  claim 49 , further comprising setting a target SCG state to SCG activation or SCG deactivation, based on the indication. 
     
     
         52 . The method according to  claim 49 , comprising any one out of:
 responsive to the indication indicating that a target SCG state comprises deactivated, activating the SCG after CHO execution, depending on the traffic assessment after CHO execution;   responsive to the indication indicating a target SCG state comprises activated, deactivating the SCG after CHO execution, depending on the traffic assessment after CHO execution;   responsive to the indication indicating a target SCG state comprises a pre-configured, value as activated or deactivated, deactivating the SCG after CHO execution, depending on the traffic assessment after CHO execution.   
     
     
         53 . A method performed by a third network node acting as a target Secondary Node (SN) for handling a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) for a User Equipment (UE) in a wireless communications network, wherein the UE is configured with a current SCG and the method comprises:
 based on CHO execution conditions relating to a CHO configuration being fulfilled, receiving an indication from the UE, which indication indicates an SCG state being set to any one out of: SCG activated or SCG deactivated.   
     
     
         54 . The method according to  claim 53 , wherein SCG state comprises any one out of the current SCG state, and/or a target SCG state. 
     
     
         55 . The method according to  claim 53 , further comprising, responsive to the indication indicating a current SCG state, setting a target SCG state to SCG activation or SCG deactivation, based on the indication. 
     
     
         56 . The method according to  claim 53 , comprising any one out of:
 responsive to the indication indicating a target SCG state comprises deactivated, activating the SCG after CHO execution, depending on the traffic assessment after CHO execution;   responsive to the indication indicating a target SCG state comprises activated, deactivating the SCG after CHO execution, depending on the traffic assessment after CHO execution;   responsive to the indication indicating a target SCG state comprises a pre-configured, value as activated or deactivated, deactivating the SCG after CHO execution, depending on the traffic assessment after CHO execution.   
     
     
         57 . A User Equipment (UE) or a source Master Node (MN) configured to indicate a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) in a wireless communications network, wherein the UE or source MN is configured with a current SCG and wherein the UE or the source MN comprises:
 a processor; and   a memory storing instructions that, when executed by the processor, cause the processor to control the UE or the source MN to:
 obtain a Conditional Handover (CHO) configuration for the UE, comprising a configuration for a target candidate node, wherein the target candidate node comprises any one or more out of: a target candidate MN and a target candidate Secondary Node (SN); 
 responsive to fulfillment of CHO execution conditions related to the CHO configuration, send an indication to the target candidate node, indicating an SCG state being set to any one out of: SCG activated or SCG deactivated. 
   
     
     
         58 . The UE or the source MN according to  claim 57 , wherein the SCG state is set in dependence on one or both of the current SCG state and a target SCG state. 
     
     
         59 . The UE or the source MN according to  claim 57 , further configured to:
 obtain a current SCG state, which current SCG state is any one out of: SCG activated or SCG deactivated;   and wherein the indication to the target candidate node indicates the current SCG state, which indication will set a target SCG state to SCG activation or SCG deactivation, initiated by the selected target candidate node.   
     
     
         60 . The UE or the source MN according to  claim 57 , further configured to:
 obtain a target SCG state adapted to be any one out of:
 always deactivated, 
 always activated, 
 a value pre-configured, as activated or deactivated, 
 a latest SCG state the UE has when CHO is executed, and 
   wherein the indication to the target candidate node indicates the target SCG state.   
     
     
         61 . A first network node acting as a source Master Node (MN) configured to handle a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) for a User Equipment (UE) in a wireless communications network, wherein the UE is arranged to be configured with a current SCG and wherein the first network node comprises:
 a processor; and   a memory storing instructions that, when executed by the processor, configure the processor to cause the first network node to:
 send a Conditional Handover (CHO) configuration to the UE, the CHO configuration comprising a configuration for a target candidate node, and wherein the target candidate node comprises any one or more out of: a target candidate Master Node (MN) and a target candidate Secondary Node (SN); and 
 wherein fulfillment of CHO execution conditions triggers the UE to send an indication to the target candidate node, indicating an SCG state being set to any one out of: SCG activated or SCG deactivated. 
   
     
     
         62 . The first network node according to  claim 61 , wherein the SCG state comprises any one out of the current SCG state and/or a target SCG state. 
     
     
         63 . The first network node according to  claim 61 , further configured to:
 send to the UE, a current SCG state, which current SCG state is set to any one out of: SCG activated or SCG deactivated,   and wherein the indication to the target candidate node indicates the current SCG state, which indication will set a target SCG state to SCG activation or SCG deactivation, initiated by the selected target candidate node.   
     
     
         64 . The first network node according to  claim 61 , further being configured to: configure the UE with a target SCG state set to any one out of:
 always deactivated,   always activated,   a value pre-configured as activated or deactivated,   a latest SCG state the UE has when CHO is executed, and   wherein the indication indicates the target SCG state.   
     
     
         65 . A second network node acting as a target Master Node (MN) configured to handle a Secondary Cell Group (SCG) state during a Conditional Handover (CHO) for a User Equipment (UE) in a wireless communications network, wherein the UE is configured with a current SCG, and the second network node comprises:
 a processor; and   a memory storing instructions that, when executed by the processor, cause the processor to control the second network node to:   in dependence on CHO execution conditions relating to a CHO configuration being fulfilled, receive an indication from the UE, indicating an SCG state being set to any one out of: SCG activated or SCG deactivated.